On an upcoming episode of Grimm, Nick (David Giuntoli) and Hank (Russell Hornsby) will be dealing with a gang-related incident.

NBC released a synopsis for the January 10 episode of Grimm this week. In the episode, titled Eyes of the Beholder, Nick and Hank investigate a murder that involves a gang as well as the Wesen community. The case reaches new heights when Hank's physical therapist Zuri (guest star Sharon Leal) and her brother get involved in the investigation.

Elsewhere, Juliette (Bitsie Tulloch) enlists in Rosalee (Bree Turner) in coping with the fact that her friend is Wesen.

Grimm will also air a new episode previous to the January 10 episode on January 3. The episode features Nick and Hank investigating a Wesen healer that causes more harm than good with his abilities. Meanwhile, Captain Renard (Sasha Roiz) finds Adalind (Claire Coffee) and gives her a stern warning.

Grimm Spoilers: Nick Gradually Becoming a Wesen as Zombie Side Effects Continue? 

In other Grimm news, Tulloch recently spoke to The Huffington Post about the fun of being on the show and filming the two-hour Christmas special in particular.

"The Christmas special was so much fun to shoot. I spend time on Twitter and I was shocked that as excited as people were to have two-hours of Grimm, they were taken aback to hear it was the season finale," Tulloch said. "We aren't going away forever, just taking a little break and coming back with more than a few surprises.

Grimm airs Fridays at 9 p.m. on NBC.

Watch a trailer for the next episode of Grimm here:

Tags: Grimm NBC Grimm Spoilers